28648834 has 4 divisors (see below), whose sum is σ = 42973254. Its totient is φ = 14324416.

The previous prime is 28648831. The next prime is 28648843. The reversal of 28648834 is 43884682.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 26040609 + 2608225 = 5103^2 + 1615^2 .

It is not an unprimeable number, because it can be changed into a prime (28648831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7162207 + ... + 7162210.

Almost surely, 2^28648834 is an apocalyptic number.

28648834 is a deficient number, since it is larger than the sum of its proper divisors (14324420).

28648834 is a wasteful number, since it uses less digits than its factorization.

28648834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14324419.

The product of its digits is 294912, while the sum is 43.

The square root of 28648834 is about 5352.4605556697. The cubic root of 28648834 is about 305.9865359249.

The spelling of 28648834 in words is "twenty-eight million, six hundred forty-eight thousand, eight hundred thirty-four".